2 * arch/xtensa/kernel/vmlinux.lds.S
6 * This file is subject to the terms and conditions of the GNU General Public
7 * License. See the file "COPYING" in the main directory of this archive
10 * Copyright (C) 2001 - 2005 Tensilica Inc.
12 * Chris Zankel <chris@zankel.net>
13 * Marc Gauthier <marc@tensilica.com, marc@alumni.uwaterloo.ca>
14 * Joe Taylor <joe@tensilica.com, joetylr@yahoo.com>
17 #include <asm-generic/vmlinux.lds.h>
19 #include <asm/variant/core.h>
24 jiffies = jiffies_64 + 4;
29 #define KERNELOFFSET 0xd0001000
31 /* Note: In the following macros, it would be nice to specify only the
32 vector name and section kind and construct "sym" and "section" using
33 CPP concatenation, but that does not work reliably. Concatenating a
34 string with "." produces an invalid token. CPP will not print a
35 warning because it thinks this is an assembly file, but it leaves
36 them as multiple tokens and there may or may not be whitespace
39 /* Macro for a relocation entry */
41 #define RELOCATE_ENTRY(sym, section) \
42 LONG(sym ## _start); \
44 LONG(LOADADDR(section))
46 /* Macro to define a section for a vector.
48 * Use of the MIN function catches the types of errors illustrated in
49 * the following example:
51 * Assume the section .DoubleExceptionVector.literal is completely
52 * full. Then a programmer adds code to .DoubleExceptionVector.text
53 * that produces another literal. The final literal position will
54 * overlay onto the first word of the adjacent code section
55 * .DoubleExceptionVector.text. (In practice, the literals will
56 * overwrite the code, and the first few instructions will be
60 #define SECTION_VECTOR(sym, section, addr, max_prevsec_size, prevsec) \
61 section addr : AT((MIN(LOADADDR(prevsec) + max_prevsec_size, \
62 LOADADDR(prevsec) + SIZEOF(prevsec)) + 3) & ~ 3) \
65 sym ## _start = ABSOLUTE(.); \
67 sym ## _end = ABSOLUTE(.); \
71 * Mapping of input sections to output sections when linking.
85 /* The .head.text section must be the first section! */
88 VMLINUX_SYMBOL(__sched_text_start) = .;
89 *(.sched.literal .sched.text)
90 VMLINUX_SYMBOL(__sched_text_end) = .;
91 VMLINUX_SYMBOL(__lock_text_start) = .;
92 *(.spinlock.literal .spinlock.text)
93 VMLINUX_SYMBOL(__lock_text_end) = .;
103 /* Relocation table */
105 .fixup : { *(.fixup) }
110 __start___ex_table = .;
112 __stop___ex_table = .;
117 . = ALIGN(XCHAL_ICACHE_LINESIZE);
123 . = ALIGN(XCHAL_ICACHE_LINESIZE);
124 *(.data.cacheline_aligned)
129 /* The initial task */
131 .data.init_task : { *(.data.init_task) }
133 /* Initialization code and data: */
139 *(.init.literal) INIT_TEXT
147 __tagtable_begin = .;
152 __boot_reloc_table_start = ABSOLUTE(.);
154 RELOCATE_ENTRY(_WindowVectors_text,
155 .WindowVectors.text);
156 RELOCATE_ENTRY(_KernelExceptionVector_text,
157 .KernelExceptionVector.text);
158 RELOCATE_ENTRY(_UserExceptionVector_text,
159 .UserExceptionVector.text);
160 RELOCATE_ENTRY(_DoubleExceptionVector_literal,
161 .DoubleExceptionVector.literal);
162 RELOCATE_ENTRY(_DoubleExceptionVector_text,
163 .DoubleExceptionVector.text);
165 __boot_reloc_table_end = ABSOLUTE(.) ;
168 . = ALIGN(XCHAL_ICACHE_LINESIZE);
171 .init.setup : { *(.init.setup) }
174 __initcall_start = .;
180 __con_initcall_start = .;
181 .con_initcall.init : { *(.con_initcall.init) }
182 __con_initcall_end = .;
187 #ifdef CONFIG_BLK_DEV_INITRD
189 __initramfs_start =.;
190 .init.ramfs : { *(.init.ramfs) }
197 /* We need this dummy segment here */
202 /* The vectors are relocated to the real position at startup time */
204 SECTION_VECTOR (_WindowVectors_text,
206 XCHAL_WINDOW_VECTORS_VADDR, 4,
208 SECTION_VECTOR (_DebugInterruptVector_literal,
209 .DebugInterruptVector.literal,
210 XCHAL_DEBUG_VECTOR_VADDR - 4,
211 SIZEOF(.WindowVectors.text),
213 SECTION_VECTOR (_DebugInterruptVector_text,
214 .DebugInterruptVector.text,
215 XCHAL_DEBUG_VECTOR_VADDR,
217 .DebugInterruptVector.literal)
218 SECTION_VECTOR (_KernelExceptionVector_literal,
219 .KernelExceptionVector.literal,
220 XCHAL_KERNEL_VECTOR_VADDR - 4,
221 SIZEOF(.DebugInterruptVector.text),
222 .DebugInterruptVector.text)
223 SECTION_VECTOR (_KernelExceptionVector_text,
224 .KernelExceptionVector.text,
225 XCHAL_KERNEL_VECTOR_VADDR,
227 .KernelExceptionVector.literal)
228 SECTION_VECTOR (_UserExceptionVector_literal,
229 .UserExceptionVector.literal,
230 XCHAL_USER_VECTOR_VADDR - 4,
231 SIZEOF(.KernelExceptionVector.text),
232 .KernelExceptionVector.text)
233 SECTION_VECTOR (_UserExceptionVector_text,
234 .UserExceptionVector.text,
235 XCHAL_USER_VECTOR_VADDR,
237 .UserExceptionVector.literal)
238 SECTION_VECTOR (_DoubleExceptionVector_literal,
239 .DoubleExceptionVector.literal,
240 XCHAL_DOUBLEEXC_VECTOR_VADDR - 16,
241 SIZEOF(.UserExceptionVector.text),
242 .UserExceptionVector.text)
243 SECTION_VECTOR (_DoubleExceptionVector_text,
244 .DoubleExceptionVector.text,
245 XCHAL_DOUBLEEXC_VECTOR_VADDR,
247 .DoubleExceptionVector.literal)
249 . = (LOADADDR( .DoubleExceptionVector.text ) + SIZEOF( .DoubleExceptionVector.text ) + 3) & ~ 3;
258 .bss : { *(.bss.page_aligned) *(.bss) }
263 /* only used by the boot loader */
266 .bootstrap : { *(.bootstrap.literal .bootstrap.text .bootstrap.data) }
270 .initrd : { *(.initrd) }
273 .ResetVector.text XCHAL_RESET_VECTOR_VADDR :
278 /* Sections to be discarded */
287 .xt.lit : { *(.xt.lit) }
288 .xt.prop : { *(.xt.prop) }
290 .debug 0 : { *(.debug) }
291 .line 0 : { *(.line) }
292 .debug_srcinfo 0 : { *(.debug_srcinfo) }
293 .debug_sfnames 0 : { *(.debug_sfnames) }
294 .debug_aranges 0 : { *(.debug_aranges) }
295 .debug_pubnames 0 : { *(.debug_pubnames) }
296 .debug_info 0 : { *(.debug_info) }
297 .debug_abbrev 0 : { *(.debug_abbrev) }
298 .debug_line 0 : { *(.debug_line) }
299 .debug_frame 0 : { *(.debug_frame) }
300 .debug_str 0 : { *(.debug_str) }
301 .debug_loc 0 : { *(.debug_loc) }
302 .debug_macinfo 0 : { *(.debug_macinfo) }
303 .debug_weaknames 0 : { *(.debug_weaknames) }
304 .debug_funcnames 0 : { *(.debug_funcnames) }
305 .debug_typenames 0 : { *(.debug_typenames) }
306 .debug_varnames 0 : { *(.debug_varnames) }